Physics, asked by kumarvivek9689, 1 year ago

History of spherical mirror matter

Answers

Answered by revathilingannagari
1
1) the earliest manufactured mirrors were pieces of polished stone such as obsidian, a naturally occuring volcanic glass

2) they are from around 6000 bc  mirrors of copper were crafted in MESOPOTAMIA 

3) bronze mirrors were manufactured from around 2000 bc . mirrors made of  mixtures such as copper and tin speculum metal are also been produced in china and india

4)Metal coated glass mirrors are said to have been invented in sidon in first century A.D. and glass mirrors backed with gold leaf were used by ROMANS

5)PTOLEMY conducted number of experiments with curved polished iron mirrors 

6)china people began making mirrors with the use of silver mercury amalgams as early as superior method of coating glass with tin mercury amalgams

7)The invention of silvered glass is credited to    GERMAN

8) this silvering process was adapted for mass manufacturing and lead to the greater  availability  of affordable  mirrors

9) now days mirrors are decomposition directly on glass substrate 
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